Electrically heated surgical blade and methods of making

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5308311
SERIAL NO

07877698

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A hemostatic surgical blade and methods of manufacturing such blades are provided, wherein the blade comprises a laminate region having a hardenable center layer and highly thermally conductive outer layers, joined to a second region of a low thermal conductivity material. A heating element is secured to the laminate region and in thermal communication therewith to thermally reform the collagen of tissue as it is incised. The heat generated by the heating element is conducted to the cutting edge of the blade to maintain the cutting edge temperature within 20.degree. C. to 70.degree. C. of a user-selected operating temperature. The second region reduces the conduction of heat to the handle of the instrument. The heating element comprises a thermally conductive dielectric layer attached to an outer surface of the laminate region, resistive conductive elements deposited on the dielectric, a second dielectric layer covering the resistive conductor elements, and an abherent coating disposed thereon to reduce coagulum buildup on the blade.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
GYRUS ACMI, INC.SOUTHBOROUGH, MA182
GYRUS ENT L.L.C.BARTLETT, TN55
HEMOSTATIC SURGERY CORPORATION, A CAYMAN ISLANDS COMPANYPALO ALTO, CA4

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eggers, Philip E 1750 Taylor St., Dublin, OH 221 39820
Shaw, Robert F 1750 Taylor St., San Francisco, CA 94108 22 2230

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Hemostatic Surgery Corporation (1)
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HEMOSTATIC SURGERY CORPORATION, A CAYMAN ISLANDS COMPANY (2)
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AMP-AKZO CORPORATION (1)
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GYRUS MEDICAL, INC. (2)
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EVEREST MEDICAL CORPORATION (2)
* 4802476 Electro-surgical instrument 107 1987
* 4958539 Method of making an electrosurgical spatula blade 83 1989
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (2)
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7935113 Electrosurgical blade 1 2006
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* Cited By Examiner